My Favorite Free Bug Bounty Tools in 2026

If someone asked me today,

"What tools should I install first for bug bounty?"

I wouldn't give them a list of 100 GitHub repositories.

One mistake many beginners make is trying to install every security tool they see on X, GitHub, or YouTube. A week later, they have dozens of tools installed but still don't know when to use any of them.

I've learned that it's much better to master a small set of reliable tools than constantly chase new ones.

These are the free tools I keep coming back to in 2026. They're simple to use, actively maintained, and cover almost every stage of web reconnaissance. Many hunters rely on a similar core toolkit centered around reconnaissance, HTTP probing, fuzzing, and template-based scanning.

1. Subfinder

Purpose: Find subdomains

Subfinder is usually where I begin.

Instead of manually searching for subdomains, it gathers them from multiple passive sources in seconds.

Why I like it:

• Fast
• Easy to use
• Great for large targets

Example:

subfinder -d example.com -silent

subfinder -d example.com -silent

GitHub - projectdiscovery/subfinder: Fast passive subdomain enumeration tool. Fast passive subdomain enumeration tool. Contribute to projectdiscovery/subfinder development by creating an account on…

2. httpx

Purpose: Find live websites

After collecting subdomains, I don't waste time checking them manually.

I simply pass the list to httpx.

It quickly tells me:

• Which hosts are alive
• Status codes
• Page titles
• Technologies

Example:

httpx -l subdomains.txt -sc -title

httpx -l subdomains.txt -sc -title

This immediately removes dead hosts from my workflow.

GitHub - projectdiscovery/httpx: httpx is a fast and multi-purpose HTTP toolkit that allows running… httpx is a fast and multi-purpose HTTP toolkit that allows running multiple probes using the retryablehttp library. …

3. Katana

Purpose: Website crawling

Katana has become one of my favorite crawlers.

It automatically discovers:

• URLs
• JavaScript files
• Hidden routes

Instead of clicking through every page manually, Katana explores the application for me.

Example:

katana -u https://example.com

katana -u https://example.com

GitHub - projectdiscovery/katana: A next-generation crawling and spidering framework. A next-generation crawling and spidering framework. - projectdiscovery/katana

4. waymore

Purpose: Historical URLs

One lesson I learned early is that not every interesting endpoint exists on the current version of a website.

waymore searches archived sources and often discovers URLs that disappeared months ago.

Those old URLs sometimes reveal useful information about the application's structure.

GitHub - xnl-h4ck3r/waymore: Find way more from the Wayback Machine, Common Crawl, Alien Vault OTX… Find way more from the Wayback Machine, Common Crawl, Alien Vault OTX, URLScan, VirusTotal, GhostArchive & Intelligence…

5. Arjun

Purpose: Hidden parameters

Some endpoints accept parameters that aren't visible anywhere.

Arjun helps discover those hidden GET parameters automatically.

Instead of guessing names one by one, I let the tool do the work.

GitHub - s0md3v/Arjun: HTTP parameter discovery suite. HTTP parameter discovery suite. Contribute to s0md3v/Arjun development by creating an account on GitHub.

6. ffuf

Purpose: Directory and file fuzzing

Whenever I want to look for hidden directories or files, ffuf is my first choice.

Example:

ffuf -u https://example.com/FUZZ -w wordlist.txt

ffuf -u https://example.com/FUZZ -w wordlist.txt

It's fast, lightweight, and extremely useful during reconnaissance.

GitHub - ffuf/ffuf: Fast web fuzzer written in Go Fast web fuzzer written in Go. Contribute to ffuf/ffuf development by creating an account on GitHub.

7. Nuclei

Purpose: Template-based scanning

Nuclei helps identify common misconfigurations and known issues using community templates.

I don't treat it as a replacement for manual testing.

Instead, I use it to save time and identify areas that deserve closer inspection. Nuclei remains one of the most widely used open-source scanners in modern recon workflows.

GitHub - projectdiscovery/nuclei: Nuclei is a fast, customizable vulnerability scanner powered by… Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple…

8. XNLDorker

Purpose: Google Dork automation

I enjoy using Google Dorks, but running them manually can be repetitive.

XNLDorker makes the process easier by collecting URLs from multiple search engines and saving everything into a single file.

That makes reviewing results much more organized.

GitHub - xnl-h4ck3r/xnldorker: Gather results of dorks across a number of search engines Gather results of dorks across a number of search engines - xnl-h4ck3r/xnldorker

9. Burp Suite Community Edition

No bug bounty setup feels complete without Burp Suite.

Even the free Community Edition gives you access to:

• Intercept Proxy
• Repeater
• Decoder

I use it every day while manually testing applications.

10. grep

Not every useful tool has a fancy interface.

Sometimes a simple command like:

grep -Ei "token|secret|api|key" .js

grep -Ei "token|secret|api|key" .js

finds exactly what I'm looking for.

I regularly use grep while reviewing downloaded JavaScript files.

The Workflow That Works for Me

Instead of randomly running tools, I follow a simple order.

1. Subfinder
2. httpx
3. Katana
4. waymore
5. Arjun
6. ffuf
7. Burp Suite
8. Manual Testing

Following a consistent process has helped me stay organized and avoid repeating the same work.

You Don't Need Every Tool

This is something I wish someone had told me earlier.

Installing fifty tools won't make you a better bug bounty hunter.

Understanding why you're using a tool is far more important than collecting them.

I've seen beginners spend hours installing new utilities instead of learning how websites actually work.

The tools are there to support your thinking, not replace it. Many experienced hunters also emphasize mastering a smaller toolkit instead of relying on dozens of automated utilities.

My Advice for Beginners

If you're just starting out, don't feel pressured to learn everything at once.

Pick one tool.

Understand it well.

Use it on practice targets.

Then move on to the next one.

After a few weeks, you'll naturally build your own workflow instead of copying someone else's.

Final Thoughts

There are hundreds of excellent open-source security tools available today.

These are simply the ones I keep returning to because they've consistently made my reconnaissance faster and more organized.

Your toolkit will probably change as you gain experience, and that's perfectly normal.

The important part isn't having the biggest collection of tools.

It's knowing when to use each one.

Need Help?

If you have questions about any of these tools or you're just getting started with bug bounty hunting, feel free to reach out.

Connect with me:

X (Twitter): commanak46

I'm always happy to connect with other learners and share what I've learned.

Happy hunting! ✨

Monika Hi, I'm Monika ✨I break down real-world bug bounty reports into simple, practical write-ups.If my articles help you…